1 /* $NetBSD: sbicvar.h,v 1.1.24.4 2004/12/18 09:31:00 skrll Exp $ */
4 * Copyright (c) 1990 The Regents of the University of California.
7 * This code is derived from software contributed to Berkeley by
8 * Van Jacobson of Lawrence Berkeley Laboratory.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * @(#)scsivar.h 7.1 (Berkeley) 5/8/90
39 #include <sys/malloc.h>
40 #include <sys/callout.h>
43 * ACB. Holds additional information for each SCSI command Comments: We
44 * need a separate scsi command block because we may need to overwrite it
45 * with a request sense command. Basicly, we refrain from fiddling with
46 * the scsi_xfer struct (except do the expected updating of return values).
47 * We'll generally update: xs->{flags,resid,error,sense,status} and
48 * occasionally xs->retries.
51 TAILQ_ENTRY(sbic_acb
) chain
;
52 struct scsipi_xfer
*xs
; /* SCSI xfer ctrl block from above */
53 int flags
; /* Status */
55 #define ACB_ACTIVE 0x01
57 #define ACB_DATAIN 0x04 /* DMA direction flag */
58 #define ACB_DMA 0x08 /* ACB using DMA this time */
59 struct scsipi_generic cmd
; /* SCSI command block */
61 bus_dmamap_t dmamap_xfer
; /* Handle for dma */
62 u_char
*data
; /* Data buffer... */
63 int datalen
; /* ... and its length. */
65 u_long sc_tcnt
; /* number of bytes for this DMA */
69 * Some info about each (possible) target on the SCSI bus. This should
70 * probably have been a "per target+lunit" structure, but we'll leave it at
71 * this for now. Is there a way to reliably hook it up to sc->fordriver??
74 int cmds
; /* #commands processed */
75 int dconns
; /* #disconnects */
76 int touts
; /* #timeouts */
77 int perrs
; /* #parity errors */
78 u_char
* bounce
; /* Bounce buffer for this device */
79 ushort lubusy
; /* What local units/subr. are busy? */
81 u_char period
; /* Period suggestion */
82 u_char offset
; /* Offset suggestion */
87 /* struct isr sc_isr;*/
88 struct callout sc_timo_ch
;
94 u_char target
; /* Currently active target */
96 struct scsipi_channel sc_channel
;
97 struct scsipi_adapter sc_adapter
;
98 sbic_regmap sc_sbicp
; /* Handle for the SBIC */
100 volatile void *sc_cregs
; /* driver specific regs */
102 /* Lists of command blocks */
103 TAILQ_HEAD(acb_list
, sbic_acb
) free_list
,
107 struct sbic_acb
*sc_nexus
; /* current command */
108 struct sbic_acb sc_acb
[8]; /* the real command blocks */
109 struct sbic_tinfo sc_tinfo
[8];
117 int sc_dmaflags
; /* Target-specific busdma flags */
118 void *sc_dmah
; /* Interface specific dma handle */
119 bus_dma_tag_t sc_dmat
; /* Tag for dma accesses */
120 int sc_max_dmalen
; /* Maximum DMA segment length */
121 int sc_dmamode
; /* Machine-specific DMA mode for
124 u_short sc_dmatimo
; /* dma timeout */
125 int (*sc_dmaok
) (void *, bus_dma_tag_t
, struct sbic_acb
*);
126 int (*sc_dmasetup
) (void *, bus_dma_tag_t
, struct sbic_acb
*, int);
127 int (*sc_dmanext
) (void *, bus_dma_tag_t
, struct sbic_acb
*, int);
128 void (*sc_dmastop
) (void *, bus_dma_tag_t
, struct sbic_acb
*);
129 void (*sc_dmafinish
) (void *, bus_dma_tag_t
, struct sbic_acb
*);
130 void (*sc_enintr
) (struct sbic_softc
*);
134 #define SBICF_ALIVE 0x01 /* controller initialized */
135 #define SBICF_SELECTED 0x02 /* bus is in selected state. */
136 #define SBICF_ICMD 0x04 /* Immediate command in execution */
137 #define SBICF_BADDMA 0x08 /* controller can only DMA to ztwobus space */
138 #define SBICF_NODMA 0x10 /* Don't use DMA */
139 #define SBICF_INTR 0x20 /* SBICF interrupt expected */
140 #define SBICF_INDMA 0x40 /* not used yet, DMA I/O in progress */
143 #define SYNC_START 0 /* no sync handshake started */
144 #define SYNC_SENT 1 /* we sent sync request, no answer yet */
145 #define SYNC_DONE 2 /* target accepted our (or inferior) settings,
146 or it rejected the request and we stay
149 #define DDB_FOLLOW 0x04
152 extern u_char sbic_inhibit_sync
[8];
153 extern int sbic_no_dma
;
154 extern int sbic_clock_override
;
156 #define PHASE_MASK 0x07 /* mask for psns/pctl phase */
157 #define DATA_OUT_PHASE 0x00
158 #define DATA_IN_PHASE 0x01
159 #define CMD_PHASE 0x02
160 #define STATUS_PHASE 0x03
161 #define BUS_FREE_PHASE 0x04
162 #define ARB_SEL_PHASE 0x05 /* Fuji chip combines arbitration with sel. */
163 #define MESG_OUT_PHASE 0x06
164 #define MESG_IN_PHASE 0x07
166 #define MSG_CMD_COMPLETE 0x00
167 #define MSG_EXT_MESSAGE 0x01
168 #define MSG_SAVE_DATA_PTR 0x02
169 #define MSG_RESTORE_PTR 0x03
170 #define MSG_DISCONNECT 0x04
171 #define MSG_INIT_DETECT_ERROR 0x05
172 #define MSG_ABORT 0x06
173 #define MSG_REJECT 0x07
174 #define MSG_NOOP 0x08
175 #define MSG_PARITY_ERROR 0x09
176 #define MSG_BUS_DEVICE_RESET 0x0C
177 #define MSG_IDENTIFY 0x80
178 #define MSG_IDENTIFY_DR 0xc0 /* (disconnect/reconnect allowed) */
179 #define MSG_SYNC_REQ 0x01
181 #define MSG_ISIDENTIFY(x) (x&MSG_IDENTIFY)
183 #define IFY_LUNTRN(x) (x&0x07)
184 #define IFY_LUN(x) (!(x&0x20))
186 /* Check if high bit set */
188 #define STS_CHECKCOND 0x02 /* Check Condition (ie., read sense) */
189 #define STS_CONDMET 0x04 /* Condition Met (ie., search worked) */
190 #define STS_BUSY 0x08
191 #define STS_INTERMED 0x10 /* Intermediate status sent */
192 #define STS_EXT 0x80 /* Extended status valid */
195 /* States returned by our state machine */
197 #define SBIC_STATE_ERROR -1
198 #define SBIC_STATE_DONE 0
199 #define SBIC_STATE_RUNNING 1
200 #define SBIC_STATE_DISCONNECT 2
205 struct scsi_fmt_cdb
{
206 int len
; /* cdb length (in bytes) */
207 u_char cdb
[28]; /* cdb to use on next read/write */
213 void sbic_minphys (struct buf
*bp
);
214 void sbic_scsi_request (struct scsipi_channel
*,
215 scsipi_adapter_req_t
, void *);
216 int sbicinit (struct sbic_softc
*dev
);
217 int sbicintr (struct sbic_softc
*);
218 void sbic_dump (struct sbic_softc
*dev
);
220 #endif /* _SBICVAR_H_ */